These wires basically take the high – voltage electricity from your ignition coil and deliver it to the spark plugs. Think of it like a delivery service for the spark. Each wire connects to a specific spark plug, and that electricity is what actually makes the fuel ignite inside the engine cylinder. They have to be able to handle a lot of voltage without losing any power along the way. They’re a critical part of the engine's ignition system, obviously. Without a good spark, the engine won't run, or it’ll run really poorly. They work with the coil, distributor (on some older vehicles), and the spark plugs to create that initial combustion. They’re always under the hood, usually running along the engine block. Well, if these wires get old, cracked, or corroded, they start to leak that high voltage. That means less spark gets to the plugs, and you’ll notice if the engine misfires – that rough running feeling, maybe a loss of power, or even a check engine light. Sometimes you can even see the spark arcing from a bad wire in the dark. They act like a shield, keeping that powerful spark contained and directed where it needs to go. Over time, the insulation breaks down, and they just can't do that job effectively anymore. Replacing them isn’t super complicated and it’s a relatively inexpensive way to keep things running smoothly. You can find a good set of ignition wires, often with a variety of options for your vehicle, at places like Fixparts Online. Our promise to you: Ignition Wire (MPN 12121719989) comes with a 12-month warranty!

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